How to add Weight to objects?

I searched all over the internet and saw very old topics on this subject, but nothing conclusive. I specifically have a rigged and working car. But when I walk my character over the car, he pushes the car with ease, as if the car were made of paper.

I already try the physics properties, added mass scale to infinity, but nothing seems to change. :frowning:

I saw a tutorial where they were adding weight to a characters bones in blender. ??? That’s all I know.